This week's book giveaways are in the Java EE and JavaScript forums.
We're giving away four copies each of The Java EE 7 Tutorial Volume 1 or Volume 2(winners choice) and jQuery UI in Action and have the authors on-line!
See this thread and this one for details.
The moose likes Programmer Certification (SCJP/OCPJP) and the fly likes No Big Moose Saloon
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Win a copy of The Java EE 7 Tutorial Volume 1 or Volume 2 this week in the Java EE forum
or jQuery UI in Action in the JavaScript forum!
JavaRanch » Java Forums » Certification » Programmer Certification (SCJP/OCPJP)
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Dhananjay Ramakrishnappa
Greenhorn

Joined: Jul 25, 2005
Posts: 5
Therz no difference in terms of effieciency.

In the first case a is compared with null

In the second case null is compared with a.

Its very much similar to if(a==a){}
Barry Gaunt
Ranch Hand

Joined: Aug 03, 2002
Posts: 7729
I thing this post belongs in the Performance forum in this thread


Ask a Meaningful Question and HowToAskQuestionsOnJavaRanch
Getting someone to think and try something out is much more useful than just telling them the answer.
 
 
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